I have been married for a year now & my husband visits every 6 months. Last feb when I & my husband went on a vacation we had protected sex four days in a row wherein the 1st day I had an i pill, 2nd and 3rd day we used condom approx 9 (4+5) & 4th day i-pill Since then I have been getting periods every month after 24-28 days but lasts only 2 days Also I have been experiencing weakness Hairfall problem, joints pain, headache Also there is constant mild pain in my abdomen & before periods there is also lower right back pain. Before february I had my periods normally which lasted 4-5 days and pre periods symptoms were leg pain and pain in abdomen. please help.